A mapping and compositional spectroscopy package, PERSI, will make observations in the visible, ultraviolet and infrared parts of the spectrum.是什么意思_A mapping and compositional spectroscopy package, PERSI, will make observations in the visible, ultraviolet and infrared parts of the spectrum.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句